1. Documented HIV antibody by ELISA confirmed by Western Blot or current HIV viral load greater than 10,000 (in any medical record); or HIV antibody by 4th generation ELISA confirmed by a "Multi-Spot" rapid test for discrimination of HIV-1 from HIV-2 infection and, if necessary in the case of discordant results, nucleic acid testing (NAT) for HIV-1; or any other confirmatory pathway approved by the Massachusetts Department of Public Health, U.S. Centers for Disease Control and Prevention, or Boston Medical Center, Center for Infectious Diseases.